Get Cell Value Using rowId and columnId

THe function below gives me the value, row.id and column.id of the cell ive just edited.
I want to access a value in the same row but different column.

How do I access a cell value if I have row.id and column.id?

Isnt there a function like getCellValue(rowId, columnId)

grid.events.on("afterEditEnd", function(value,row,column){
 if (outputElement) {
   
var outputElement = document.getElementById("output");
   outputElement.value = //cellValue ;
}

    });